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48638501 = 181268721
BaseRepresentation
bin1011100110001…
…0101000100101
310101112002110222
42321202220211
544422413001
64454254125
71130264132
oct271425045
9111462428
1048638501
112550090a
1214357345
13a0cc7a2
146661589
15440b61b
hex2e62a25

48638501 has 4 divisors (see below), whose sum is σ = 48907404. Its totient is φ = 48369600.

The previous prime is 48638497. The next prime is 48638507. The reversal of 48638501 is 10583684.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5997601 + 42640900 = 2449^2 + 6530^2 .

It is a cyclic number.

It is not a de Polignac number, because 48638501 - 22 = 48638497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48638507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134180 + ... + 134541.

It is an arithmetic number, because the mean of its divisors is an integer number (12226851).

Almost surely, 248638501 is an apocalyptic number.

It is an amenable number.

48638501 is a deficient number, since it is larger than the sum of its proper divisors (268903).

48638501 is a wasteful number, since it uses less digits than its factorization.

48638501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268902.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 48638501 is about 6974.1308419042. The cubic root of 48638501 is about 365.0284609070.

The spelling of 48638501 in words is "forty-eight million, six hundred thirty-eight thousand, five hundred one".

Divisors: 1 181 268721 48638501